Many unknown WPS status queries are logged periodically

Using GeoServer with GEOTOOLS_DEVELOPER_LOGGING level, will result in many logged queries for unknown processes.

I'm using GeoServer with the WPS plugin and the process status on the database.
Even with an empty database and no running processes, I find the following queries every 3 seconds.

Note, it's not just one processId, but many of them, I pasted only one for reference.